EP2566755B1 - Seat add-on device - Google Patents

Description

State of the art

The invention relates to a seat mounting device according to the preamble of patent claim 1.

It is already a seat mounting device, in particular a passenger seat mounting device, for movably attaching an object to a seat, having a support arm and at least one mechanical energy storage unit intended to store in a tensioned state a force sufficient to move the support arm from a stowage position is provided in an unlocked position, known. document WO2005 / 061322 discloses such a seat mounting device.

The invention has for its object to increase the ease of use of the seat mounting device.

This object is achieved by a seat mounting device according to claim 1. Further advantageous embodiments of the invention can be taken from the dependent claims.

Advantages of the invention

According to the invention, a seat mounting device, in particular a passenger seat mounting device, for movably fastening an object to a seat, with a support arm and at least one mechanical energy storage unit provided for this purpose is to store in a tensioned state, a force which is provided for movement of the support arm from a stowed position to an unlocked position, and with at least one fixing unit, which is intended to keep the energy storage unit independently of the support arm in the tensioned state proposed , As a result, the stored in the energy storage unit power can be disconnected from the support arm. By decoupling the self-contained movement of the support arm from the stowage position into the unlocked position, a force for holding the support arm in the stowed position can be reduced, whereby a force required to release the support arm from the stowage position of a user can be reduced. By reducing the force necessary to release the support arm, an operating comfort of the seat attachment device can be increased. A "tensioned state" is to be understood, in particular, as meaning a state that sets in with a force influence on the energy storage unit, starting from a relaxed state. A "relaxed state" is to be understood, in particular, as a state that sets in the absence of the influence of force on the energy storage unit. Preferably, by holding the tensioned state of the force influence is maintained. Advantageously, the force stored in the energy storage unit is designed as a linear force. By "independent" is to be understood in particular that the tensioned state of the energy storage unit is held directly. Advantageously, the stored force in the energy storage unit is decoupled from the support arm. Preferably, the tensioned state is held at the independent holding of a component which is different from the support arm and has no connection to the support arm. In an independent of the support arm holding the tensioned state, the energy storage unit is preferably not supported on the support arm. By "direct" should be understood in particular that a power flow is transmitted directly to a stationary component. Preferably, the direct holding prevents transmission of the power flow via the support arm to the stationary component.

An "object" should be understood in this context, in particular a monitor. The support arm is preferably designed as a Videotragarm. A "stowage position" is to be understood in particular a position of the support arm, in which the seat attachment device is stored in an unused state. The seat attachment device is preferably arranged in the stowed position not disturbing for a user. An "energy storage unit" should be understood to mean in particular a unit which receives and / or stores a force applied by moving the support arm. An "unlocking position" is to be understood in particular a position of the support arm, which is set independently by the force stored in the energy storage unit. Preferably, the user, starting from the unlocked position, set a use position of the support arm. A "use position" is to be understood in particular a position of the support arm, in which the user uses the object. The use position is preferably one, in a partial pivoting range of the user adjustable, variable position of the support arm. According to the invention, the energy storage unit has at least one actuating element and the fixing unit has a stationarily arranged housing and is provided to connect the actuating element directly to the housing. As a result, the tensioned state can be kept particularly independent of the support arm.

In an advantageous embodiment, the fixing unit is provided to fix the support arm in the stowed position. As a result, a secure adjustment of the stowage position can be realized.

It is further proposed that the support arm in the stowed position is powerless with respect to the force stored in the energy storage unit. As a result, holding the stowage position of the support arm can be realized particularly easily. According to the invention, the fixing unit has at least one latching element, which is provided to latch at least the actuating element of the energy storage unit directly. As a result, an independent holding can be realized structurally simple. A "locking element" is to be understood in particular an element which is connected to a stationary component. The locking element directs a power flow directly to the stationary component. The stationary component is formed as the stationary arranged housing of the fixing unit. The fixing unit is preferably designed as a latching unit. According to the invention, the fixing unit has at least one further latching element on, which is intended to lock the arm directly. This can be special simply a safe adjustment of the stowage of the support arm can be realized. According to the invention, the fixing unit has a latching release unit, which is provided to release the latching elements successively in time. As a result, a particularly advantageous adjustment of the stowed position can be realized. By a "release of the locking elements" should be understood in particular a repeal of locks produced by the locking elements. Preferably, the fixing unit first releases the at least one locking element, which produces the locking of the support arm. According to the invention, the latching release unit has at least one coupling element which is provided for coupling the at least two latching elements to one another in terms of motion. As a result, structurally simple succession of the latching elements successively in time can be achieved. Preferably, a release of the locking of the support arm and the energy storage unit is coupled by motion technology coupling of the locking elements.

In a further embodiment of the invention, it is proposed that the energy storage unit has at least one linear spring element which is provided to store a translatory force. As a result, a particularly advantageous energy storage unit can be realized.

In particular, it is advantageous if the seat mounting device has at least one power conversion unit which is provided to couple at least the actuating element of the energy storage unit with at least a part of the support arm with respect to each other. As a result, the stored in the energy storage unit power can be easily transferred to the arm. The force conversion unit is preferably designed as a mechanical force conversion unit.

It is also advantageous if the force conversion unit is provided to convert the stored energy in the energy storage unit into a torque for actuating the support arm. As a result, the support arm can be moved from the stowage position into the unlocked position in a particularly simple manner.

In a further embodiment according to the invention, the power conversion unit has at least one deflection gear, which is provided in at least one operating state to connect the support arm with the locking element in a form-fitting manner. As a result, a number of locking elements can be reduced. A "deflection gear" should be understood in particular a unit that changes a force or a movement. Preferably, the diverter transmits a force from the support arm to the actuator and a force from the actuator to the support arm. Advantageously, the deflecting gear decoupled in at least one operating state, the support arm of the actuating element of the energy storage unit.

It is further proposed that the force conversion unit is designed as a rack and pinion gear. As a result, a particularly advantageous power conversion unit can be provided. A "rack and pinion gear" is to be understood in particular as a unit which has at least one toothed rack element and at least one toothed wheel element by means of which the unit converts a rotary movement into a linear movement or vice versa. Preferably, the rack member and the gear member on a series of projections or teeth, which are formed correspondingly. Advantageously, the elevations of the rack member and the elevations of the gear member engage each other.

It is also proposed that the seat mounting device has a release unit which is provided to actuate the fixing unit for jointly releasing the fixing of the support arm and the fixing of the energy storage unit. As a result, the fixing of the support arm and the energy storage unit can be achieved particularly advantageously. The trip unit is advantageously designed as a mechanical trip unit.

drawing

Further advantages emerge from the following description of the drawing. In the drawings, two embodiments of the invention are shown. The description and claims contain numerous features in combination. The expert will be the Expediently consider features individually and summarize meaningful further combinations.

Show it:

Fig. 1

a seat schematically illustrated with an armrest and a seat attachment device connected to the armrest,

Fig. 2

the seat mounting device in a use position with a mounting module,

Fig. 3

a sectional view of the mounting module and a main hinge unit,

Fig. 4

a schematically illustrated, alternatively formed seat mounting device in a stowed position and an armrest and

Fig. 5

a sectional view of a main hinge unit of the alternatively formed seat mounting device.

Description of the embodiment

The FIGS. 1 to 3 show a seat 14a with a seat mounting device 10a according to the invention. The seat mounting device 10a is formed as a passenger seat mounting device. The seat mounting apparatus 10a movably attaches a monitor-formed object 12a to the seat 14a. The seat 14a in this case comprises an armrest 46a, to which the seat mounting device 10a is connected. The seat 14a has seat feet 48a by means of which the seat 14a is fastened to a floor 50a of an aircraft. The seat 14a is formed as a passenger seat. The armrest 46a is formed as an armrest bracket. The designed as a monitor object 12a is only in the FIG. 1 shown.

In a use position 52a of the seat mounting device 10a (see. FIGS. 1 and 2 ), the article 12a may be used by a user sitting in the seat 14a. In the use position 52a, a screen plane 54a of the monitor-designed object 12a points in the direction of a backrest 56a of the seat 14a. The user seated on the seat 14a has thus arranged the monitor-designed object 12a in front of him. In a stowage position 20a of the seat mounting device 10a (see. FIG. 3 ), the item 12a can not be used by the user sitting in the seat 14a. In the stowage position 20a, the object 12a in the form of a monitor is arranged in the region of the seat feet 48a below the armrest 46a of the seat 14a.

The seat mounting device 10a comprises a support arm 16a and a main hinge unit 58a. The main hinge unit 58a has a stationarily arranged main joint housing 60a. The main joint housing 60a is fixedly connected to the armrest 46a by a mounting surface 62a. The main hinge unit 58a has a hinge. The rotary joint has a main axis of articulation designed as a rotation axis. The main joint axis points into the FIGS. 1 to 3 vertically from the leaf level or in the leaf level. The main hinge unit 58a guides the support arm 16a relative to the seat 14a along a pivoting portion 64a. The pivoting portion 64a forms an angular range in which the support arm 16a is pivotable. By means of the main hinge unit 58a, the support arm 16a can be moved in a direction of movement 66a and a direction of movement 68a. By the movement of the support arm 16a in the direction of movement 66a, starting from the stowage position 20a, the use position 52a is set. By the movement of the support arm 16a in the direction of movement 68a, starting from the use position 52a, the stowage position 20a is set. The stowage position 20a of the support arm 16a defines a pivot angle of the support arm 16a of zero. The maximum use position defines a maximum pivoting angle of the support arm 16a. In this example, the maximum swing angle is 165 degrees. The pivoting portion 64a of the support arm 16a in this embodiment is thus 165 degrees.

The support arm 16a is formed in three parts. The support arm 16a has a Tragarmstück 70a, an intermediate piece 72a and a device receptacle piece 74a. In FIG. 2 shows the device receptacle 74a from the sheet level. The monitor-formed article 12a is mounted on the device receptacle 74a. The intermediate piece 72a connects the Tragarmstück 70a with the device receptacle piece 74a. Further, the support arm 16a comprises two joints. The first hinge is disposed between the support arm piece 70a and the intermediate piece 72a. The second hinge is disposed between the intermediate piece 72a and the device receptacle 74a.

For loading the main hinge unit 58a with a frictional force for fixing the support arm 16a in the use position 52a, the seat mounting device 10a has a friction unit. To provide the frictional force, the friction unit on a brake pad and a brake disc.

In order to change the friction force provided for fixing the support arm 16a as a function of the pivot angle, the friction unit has an adjustment element. The adjusting element is formed integrally with the friction unit. The adjusting element is formed as a surface contour of the brake disc and the brake pad. The brake disk and the brake pad lie with their surface contour to each other. The superimposed surface contours form the adjustment. Due to the superimposed surface contours, an actuation force of the brake pad and the brake disc and thus the frictional force along the pivot range differs.

The adjusting element adjusts a frictional partial pivoting area 76a and a substantially frictionless partial pivoting area 78a along the pivoting area 64a. In the substantially friction-free partial pivoting region 78a, the adjusting element sets a friction force of the friction unit of almost zero. The adjusting element decouples in the substantially frictionless part pivoting region 78a, the friction unit substantially from a movement of the support arm 16a.

The frictional Teilschwenkbereich 76a extends during the movement of the support arm 16a in the direction of movement 68a from the use position 52a of the support arm 16a to an unlocked position 22a of the support arm 16a. In the movement of the support arm 16a in the direction of movement 68a of the frictional part pivoting portion 76a is formed as an adjoining the use position 52a upper Teilschwenkbereich. The substantially frictionless part pivotal region 78a extends from the stowage position 20a of the support arm 16a to the unlocked position 22a of the support arm 16a as the support arm 16a moves in the direction of movement 66a. During the movement of the support arm 16a in the direction of movement 66a, the substantially friction-free part pivoting region 78a is designed as a lower part pivoting region adjoining the stowage position 20a.

The seat mounting device 10a further comprises a mounting module 80a. The mounting module 80a partially comprises a fixing unit 24a, a mechanical energy storage unit 18a, a trip unit 44a and a power conversion unit 40a. The fixing unit 24a, the energy storage unit 18a, the trip unit 44a and the power conversion unit 40a are arranged in a housing 28a of the mounting module 80a. The housing 28a of the mounting module 80a forms a one-piece housing for the fixing unit 24a, for the energy storage unit 18a, for the trip unit 44a and for the power conversion unit 40a. The housing 28a is arranged stationary. The housing 28a is secured to the armrest 46a. The housing 28a is arranged in the armrest 46a when the seat mounting device 10a is mounted.

The mechanical energy storage unit 18a stores a force in a cocked state. The force stored by the energy storage unit 18a independently moves the support arm 16a from the stowage position 20a to the unlocked position 22a. It moves the support arm 16a along the substantially frictionless part pivoting area 78a in the direction of movement 66a.

The energy storage unit 18a has two linear spring elements 38a, an actuating element 26a and a guide element 82a. The actuator 26a and the guide member 82a are positively connected to a screw 84a. The spring elements 38a store a force which is exerted by the support arm 16a when moving in the direction of movement 68a. The spring elements 38a are arranged between the guide element 82a or the actuating element 26a and the housing 28a. The spring elements 38a are arranged axially behind the guide element 82a. The spring elements 38a are each formed as a spiral spring. For guiding the guide element 82a, the energy storage unit 18a has two guide rails 86a. The guide member 82a and thus the actuator 26a can be moved along the guide rails 86a. The linear spring elements 38a store a translational or linear force. The guide member 82a is formed as a guide carriage. The actuating element 26a projects out of the housing 28a and engages with the mounting module 80a mounted on the support arm 16a. The actuator 26a is formed as a cylinder with two recesses 88a, 90a. The first recess 88a has an inclined surface. One end of the actuator 26a with the first recess 88a partially engages the guide member 82a. The end of the actuator 26a with the first recess 88a is connected to the screw 84a with the guide member 82a. Another end of the actuator 26a is in the stowage position 20a and the unlocked position 22a of the support arm 16a on a Tragarmbetätigungselement 92a.

The power conversion unit 40a converts the translational force stored in the energy storage unit 18a into a torque for actuating the support arm 16a. The force conversion unit 40a couples the actuation element 26a of the energy storage unit 18a with the support arm 16a in terms of movement technology. The power conversion unit 40a comprises only the Tragarmbetätigungselement 92a in this embodiment. The Tragarmbetätigungselement 92 a is formed as a bolt. The Tragarmbetätigungselement 92a is firmly connected to the support arm 16a. The Tragarmbetätigungselement 92a engages offset to the main hinge axis on the support arm 16a. If the Tragarmbetätigungselement 92a is acted upon by the actuator 26a of the energy storage unit 18a with the translational force, it causes the force acting on the support arm 16a torque.

In order to keep the energy storage unit 18a in the tensioned state independently of the support arm 16a, the seat attachment device 10a has the fixing unit 24a. At the same time, it fixes the support arm 16a and the actuation element 26a of the energy storage unit 18a in a form-fitting manner. The fixing unit 24a connects the actuating element 26a directly to its stationarily arranged housing. The housing of the fixing unit is formed integrally with the housing 28a. The fixing unit 24a fixes the support arm 16a and the operating member 26a in the stowage position 20a. The support arm 16a is powerless in the stowage position 20a with respect to the stored force in the energy storage unit 18a.

The fixing unit 24a comprises four latching elements 30a, 94a, 32a, 96a. The latching elements 30a, 32a are designed as two separate latching engagement elements and the latching elements 94a, 96a as two separate latching receiving elements. The latching elements 30a, 32a designed as latch engagement elements each provide a holding force. The latching elements 30a, 32a are formed as holding elements. The latching elements 30a, 32a are stationarily supported against the housing 28a. The latching elements 94a, 96a designed as latching receiving elements are held by the holding force. The locking elements 94a, 96a are formed as held elements. The latching element 94a is formed as the recess 90a of the actuating element 26a. The locking element 96a is firmly connected to the support arm 16a. The latching element 30a engages in the latching element 94a and the latching element 32a in the latching element 96a, whereby the fixing unit 24a produces a positive connection.

The latching element 30a of the fixing unit 24a latches the actuating element 26a of the energy storage unit 18a. The locking element locks the energy storage unit 18a directly and independently of the support arm 16a. The actuating element 26a of the energy storage unit 18a is latched by the latching element 30a and the latching element 94a in the stowage position 20a. The latching element 30a is rotatable relative to the housing 28a. The latching element 30a has an axis of rotation. When mounted mounting module 80a, the axis of rotation of the locking element 30a is arranged parallel to the mounting surface 62a of the support arm 16a. For a positive connection, the latching element 30a engages in the latching element 94a and holds the force in the energy storage unit 18a. The latching element 30a is designed as a latching hook. The latching element 30a has a vertical surface and an inclined surface. The latching element 94a is designed as a latching hook receptacle. The latching hook receptacle is formed as the second recess 90a of the actuating element 26a of the energy storage unit 18a. In the stowage position 20a, the vertical surface of the latching element 30a lies on a vertical surface of the second recess 90a and locks the actuating element 26a of the energy storage unit 18a. In the unlocked position 22a of the support arm 16a, the latching element 30a engages with the vertical surface and the inclined surface partially in the first recess 88a. For secure gripping of the latching element 30a in the latching element 94a, the fixing unit 24a has a spring element 98a. The spring element 98a exerts a force which presses the latching element 30a into the latching element 94a. The spring element 98a is formed as a leaf spring.

The further latching element 32a of the fixing unit 24a locks the support arm 16a directly. The latching element 32a and the latching element 96a latch the support arm 16a in the stowage position 20a. The latching element 32a is arranged rotatable with respect to the housing 28a. The latching element 32a has an axis of rotation. When mounted mounting module 80a, the axis of rotation of the locking element 32a is arranged parallel to the mounting surface 62a of the support arm 16a. The locking element 96a is firmly connected to the support arm 16a. For a positive connection, the latching element 32a engages in the latching element 96a and holds the support arm 16a in the stowed position 20a. The latching element 32a projects out of the housing 28a and engages with the mounting module 80a mounted on the support arm 16a. The latching element 32a is designed as a double latching hook. In the stowage position 20a and the unlocking position 22a, the actuating element 26a engages between the latching element 96a designed as a double latching hook. The latching element 96a is designed as a latching hook receptacle. For secure gripping of the latching element 32a in the latching element 96a, the fixing unit 24a has a spring element 100a. The spring element 100a is designed as a spiral spring. The spring element 100a exerts a force which presses the latching element 32a against the latching element 96a.

In order to realize a successive solution of the latching elements 30a, 32a, the fixing unit 24a has a latching release unit 34a. The latching release unit 34a releases the latching of the latching elements 30a, 94a and the latching elements 32a, 96a in chronological succession. The latching release unit 34a first releases the latching of the latching elements 32a, 96a and then the latching of the latching elements 30a, 94a. For the movement-technical coupling of the latching elements 30a, 32a, the latching release unit 34a comprises a coupling element 36a. The coupling element 36a couples the disengagement of the latching of the support arm 16a and the actuation element 26a of the energy storage unit 18a from the stowage position 20a with one another in terms of movement technology. The coupling element 36a has a simple end 102a and a double end 104a. The coupling element 36a is formed tuning fork-shaped. The coupling element 36a has a recess at the simple end 102a and at the double end 104a. The recess at the double end 104a is formed as a circular hole. The coupling element 36a is connected to the double end 104a by a connecting pin with the latching element 30a.

In order to successively release the latching of the support arm 16a and the latching of the actuation element 26a of the energy storage unit 18a, the recess is formed at the simple end 102a as an elongate hole. The coupling element 36a is connected to the simple end 102a by a connecting pin via the opening formed as an elongated hole with the latching element 32a. Due to the recess formed as an elongate hole, the coupling element 36a and the latching element 32a have a play-related connection.

The triggering unit 44a actuates the fixing unit 24a in order to jointly solve the fixing of the support arm 16a designed as latching and the fixing of the energy storage unit 18a designed as latching. The trip unit 44a triggers the movement of the support arm 16a from the stowage position 20a to the unlocked position 22a. The trip unit 44a includes a release button 106a protruding from the housing 28a and a pulling mechanism that the user releases by operating the release button 106. The pulling mechanism engages with a protruding from the housing 28 a rod 108 a in a recess of the locking element 32 a. By pressing the release button 106a of the pulling mechanism pulls the locking element 32a from the locking element 96a and then via the coupling element 36a, the locking element 30a from the locking element 94a. By the present in the simple end 102a of the coupling element 36a game when pressing the trigger button 106a first the locking element 32a and temporally offset the locking element 30a pulled out of its catch. The fixing unit 24a releases the locking of the actuating element 26a of the energy storage unit 18a only after releasing the locking of the support arm 16a. With the seat mounting device 10a mounted with the mounting module 80a on the armrest 46a, the release button 106a projects vertically out of the armrest 46a. In principle, however, the trigger button 106a can also be arranged horizontally.

In an operating sequence of the seat mounting device 10a, in which the user, starting from the stowage position 20a, wants to set the use position 52a, the user actuates the release button 106a of the release unit 44a. By actuating the release button 106a, the trip unit 44a jointly releases the latching of the actuator 26a of the energy storage unit 18a and the latching of the support arm 16a. The triggering unit 44a triggers first the latching of the support arm 16a and then the latching of the actuation element 26a of the energy storage unit 18a. By held until then in the tensioned state energy storage unit 18a is released after releasing the locking of the actuator 26a stored in the energy storage unit 18a translational force, whereby a linear movement of the guide member 82a and thus the actuator 26a results. The force conversion unit 40a converts the translational force or the linear movement of the energy storage unit 18a into a rotational or rotational movement of the support arm 16a by the actuating element 26a of the energy storage unit 18a after releasing the locking of the latching element 30a against that with the support arm 16a connected Tragarmbetätigungselement 92a pushes. The actuating element 26a of the energy storage unit 18a moves the support arm 16a in the direction of movement 66a along the substantially frictionless part pivoting region 78a into the unlocking position 22a. The energy storage unit 18a is now in a relaxed or in a powerless state. In the absence of external force by the user, the energy storage unit 18a holds the support arm 16a in the unlocked position 22a. The force stored in the energy storage unit 18a thus acts on the support arm 16a only after releasing the locking of the actuating element 26a. Starting from the unlocking position 22a, the user sets the desired use position 52a by moving the support arm 16a in the direction of movement 66a along the frictional part pivoting area 76a. The friction unit holds the desired use position 52a by a frictional force. Through the joints, the user adjusts the use position 52a of the object 12a in the form of a monitor.

In an operating sequence of the seat mounting device 10a in which the user, starting from the use position 52a, wants to adjust the stowage position 20a, the user moves the support arm 16a in the direction of movement 68a along the frictional part pivoting area 76a into the unlocked position 22a. The energy storage unit 18a holds in the absence of external force by the user, the support arm 16a in the unlocked position 22a. In the unlocked position 22a, the actuating element 26a abuts the Tragarmbetätigungselement 92a again. Until then, the energy storage unit 18a is in the relaxed or in the powerless state. Starting from the unlocked position 22a, the user moves the support arm 16a in the direction of movement 68a along the substantially frictionless part pivoting area 78a into the stowage position 20a. When moving the support arm 16a in the direction of movement 68a along the substantially frictionless Teilschwenkbereich 78a, the user only overcomes the force of the spring elements 38a and spans the hitherto relaxed energy storage unit 18a and the hitherto relaxed spring elements 38a of the energy storage unit 18a. By moving the support arm 16a in the direction of movement 68a along the substantially frictionless part pivotal region 78a, the force conversion unit 40a converts the torque applied by the user into a translational force. This translational force stores the spring elements 38a. This translational force is the force that moves the support arm 16a upon actuation of the release button 106a in the unlocked position 22a. The stowage 20a is engaged the locking elements 30a, 32a set. When the latching element 30a engages, the latching element 30a decouples the translational force of the energy storage unit 18a from the support arm 16a. The latching element 30a directs the force of the tensioned energy storage unit 18a onto the housing of the fixing unit 24a formed in one piece with the stationary housing 28a. The fixing unit 24a simultaneously holds the support arm 16a in the stowage position 20a and the tensioned state of the energy storage unit 18a, wherein the translational force resulting from the tensioned state of the energy storage unit 18a is decoupled from the support arm 16a. The support arm 16a is powerless in a latched state with respect to the power of the energy storage unit 18a.

The FIGS. 4 and 5 show a second embodiment of a seat mounting device 10b. The seat mounting device 10b is formed as a passenger seat mounting device. The seat mounting device 10b attaches a, not shown, designed as a monitor object movable on a seat 14b. In this case, the seat 14b comprises an armrest 46b designed as an armrest console, in which the seat mounting device 10b is arranged. The seat 14b has seat legs by means of which the seat 14b is attached to a floor of an aircraft. The seat 14b is formed as a passenger seat.

In a stowage position 20b of the seat mounting device 10b (see. FIG. 4 and 5 ), the item can not be used by the user sitting in the seat 14b. In the stowage position 20b, the object designed as a monitor is arranged inside the armrest 46b. The seat mounting device 10b is disposed in the stowage position 20b entirely in the armrest 46b. In a use position 52b of the seat mounting device 10b (see the section in FIG FIG. 4 ), the article can be used by a user sitting in the seat 14b. In the use position 52b, a screen plane of the object designed as a monitor points in the direction of a backrest 56b of the seat 14b. The user sitting on the seat 14b has thus arranged the monitor-designed object in front of him. Only one support arm 16b of the seat mounting device 10b protrudes from the armrest 46b in the use position 52b.

The seat mounting device 10b includes the support arm 16b and a main hinge unit 58b. The main hinge unit 58b has a stationarily arranged main joint housing 60b. The main joint housing 60b is fixed to and with a mounting surface 62b the armrest 46b connected. The main hinge unit 58b has a hinge. The rotary joint has a main axis of articulation designed as a rotation axis. The main joint axis points into the FIGS. 4 and 5 from or into a leaf level. The main hinge unit 58b guides the support arm 16b relative to the seat 14b along a pivoting portion 64b. The pivoting portion 64b forms an angular range in which the support arm 16b is pivotable. By means of the main hinge unit 58b, the support arm 16b can be moved in a direction of movement 66b and a direction of movement 68b. By the movement of the support arm 16b in the direction of movement 66b, starting from the stowage position 20b, the use position 52b is set. By the movement of the support arm 16b in the direction of movement 68b, starting from the use position 52b, the stowage position 20b is set. The stowage position 20b of the support arm 16b defines a pivot angle of the support arm 16b from zero. The maximum use position defines a maximum pivot angle of the support arm 16b. In this embodiment, the maximum swing angle is 103 degrees. The pivoting portion 64b of the support arm 16b in this embodiment is thus 103 degrees.

The support arm 16b is formed in three parts. The support arm 16b has a Tragarmstück 70b, an intermediate piece 72b and a device receptacle piece 74b. The designed as a monitor object is mounted on the device receptacle piece 74b. Further, the support arm 16b comprises two joints. The first hinge is disposed between the support arm piece 70b and the intermediate piece 72b. The second hinge is disposed between the intermediate piece 72b and the device receiving piece 74b. The first joint and the second joint are designed as swivel joints.

The support arm piece 70b is fixedly connected to a part of the main hinge unit 58b. Via the main hinge unit 58b the Tragarmstück 70b is movably connected in the armrest 46b. The Tragarmstück 70b has a main extension direction, which is aligned in the use position 52b in a viewing direction of the user sitting in the seat 14b perpendicular to the main hinge axis of the main hinge unit 58b.

For applying the main hinge unit 58b with a frictional force for fixing the support arm 16b in the use position 52b, the seat mounting device 10b has a friction unit. To provide the frictional force, the friction unit on a brake pad and a brake disc.

To change the friction force provided for fixing the support arm 16b as a function of the pivot angle, the friction unit has an adjustment element. The adjusting element is formed integrally with the friction unit. The adjusting element is formed as a surface contour of the brake disc and the brake pad. The brake disk and the brake pad lie with their surface contour to each other. The superimposed surface contours forms the adjustment. Due to the superimposed surface contours, an actuation force of the brake lining and the brake disc and thus the frictional force along the pivoting area 64b differ.

The adjustment element adjusts a frictional partial pivot area 76b and a substantially frictionless partial pivot area 78b along the pivot area 64b. In the substantially friction-free partial pivoting region 78b, the adjusting element sets a friction force of the friction unit of almost zero. The adjusting element decouples the friction unit substantially from a movement of the support arm 16b in the substantially frictionless part pivoting region 78b.

The frictional Teilschwenkbereich 76b extends during the movement of the support arm 16b in the direction of movement 68b of the use position 52b of the support arm 16b to an unlocked position 22b of the support arm 16b. During the movement of the support arm 16b in the movement direction 68b, the frictional partial pivoting region 76b is designed as an upper partial pivoting region adjoining the use position 52b. The substantially frictionless part pivotal region 78b extends from the stowage position 20b of the support arm 16b to the unlocked position 22b of the support arm 16b as the support arm 16b moves in the direction of movement 66b. During the movement of the support arm 16b in the direction of movement 66b, the substantially friction-free part pivoting region 78b is designed as a lower partial pivoting region adjoining the stowage position 20b.

For independently moving the support arm 16b from the stowed position 20b into the unlocked position 22b, the seat mounting device 10b has a mechanical energy storage unit 18b. The mechanical energy storage unit 18b stores in a tensioned state a force that moves the support arm 16b from the stowed position 20b to the unlocked position 22b. The energy storage unit 18b moves automatically the support arm 16b along the substantially frictionless part pivoting portion 78b in the direction of movement 66b.

The energy storage unit 18b has a linear spring element 38b and an actuating element 26b. The linear spring member 38b stores a force exerted by the support arm 16b as the support arm 16b moves in the direction of movement 68b. The spring element 38b is designed as a spiral spring. The linear spring element 38b stores a translational or linear force. The spring element 38b moves the actuating element 26b linearly with the translational force. For guiding the actuating element 26b, the energy storage unit 18b has a guide rail 86b. The actuator 26b can be moved along the guide rail 86b. The guide rail 86b is disposed in parallel to the attachment surface 62b of the main hinge unit 58b.

For converting the force stored in the energy storage unit 18b into a torque for actuating the support arm 16b, the seat mounting apparatus 10b has a power conversion unit 40b. The power conversion unit 40b couples the actuating element 26b of the energy storage unit 18b and the support arm 16b in terms of motion. In this exemplary embodiment, the force conversion unit 40b has a deflection gear 42b.

The deflection gear 42b of the power conversion unit 40b is partially formed integrally with the actuator 26b. The power conversion unit 40b is formed as a rack and pinion gear. The reversing gear 42b of the power conversion unit 40b comprises a Tragarmbetätigungselement 92b. The Tragarmbetätigungselement 92b is formed as a gear member of the trained as a rack gear power conversion unit 40b. The Tragarmbetätigungselement 92b has a toothing. The toothing of the Tragarmbetätigungselements 92b has four teeth. The Tragarmbetätigungselement 92b is connected by two screws 110b fixed to the main hinge unit 58b and thus to the support arm 16b. The force conversion unit 40b designed as a rack and pinion gear unit further has a rack element. The rack member is formed integrally with the operating member 26b of the energy storage unit 18b. The actuating element 26b has a toothing which corresponds to the toothing of the support arm actuating element 92b. The gearing of the actuator 26b has five teeth, wherein a tooth is formed as a half-tooth with a shortened tooth head. The toothing of the actuating element 26b engages in the toothing of the Tragarmbetätigungselements 92b. The Tragarmbetätigungselement 92b meshes with the actuator 26b.

In order to keep the energy storage unit 18b in the tensioned state independently of the support arm 16b, the seat attachment device 10b has a fixing unit 24b. The fixing unit 24b has a fixedly arranged housing 28b. The fixing unit 24b connects the actuator 26b directly to the housing 28b. The housing 28b of the fixing unit 24b is formed integrally with the main joint housing 60b.

The fixing unit 24b indirectly fixes the support arm 16b via the fixing of the actuation element 26b of the energy storage unit 18b in the stowage position 20b. With respect to the force stored in the energy storage unit 18b, the support arm 16b is powerless in the stowage position 20b. The fixing unit 24b has two latching elements 30b, 94b. The latching element 30b is designed as a common latching engagement element and the latching element 94b as a common latching receiving element. The detent element 30b designed as a common detent engagement element locks together the support arm 16b and the energy storage unit 18b. The latching element 30b latches the support arm 16b via the power conversion unit 40b. The fixing unit 24b locks by means of the latching element 30b directly the actuating element 26b of the energy storage unit 18b and indirectly the support arm 16b. The latching element locks the actuating element 26b independently of the support arm 16b in the stowage position 20b.

The latching elements 30b, 94b of the fixing unit 24b latch the actuating element 26b of the energy storage unit 18b and thus the energy storage unit 18b directly. The latching element 30b is rotatably arranged with respect to the stationarily arranged housing 28b. The latching element 30b has an axis of rotation. The axis of rotation of the locking element 30b is arranged parallel to the mounting surface 62b. The locking element 94b is fixedly connected to the actuating element 26b by a screw 112b. For the positive connection, the locking element 94b engages in the locking element 30b. The latching element 30b holds the actuating element 26b and, via the force conversion unit 40b, holds the support arm 16b in the stowed position 20b. The deflection gear 42b connects the latching element 30b in a form-fitting manner with the support arm 16b. For secure gripping of the locking element 94b in the latching element 30b, the fixing unit 24b has a spring element 114b. The spring element 114b is designed as a spiral spring. The spring element 114b exerts a force which presses the latching element 30b downwards against the latching element 94b.

To actuate the fixing unit 24b in order to jointly release the latching of the support arm 16b and the latching of the actuation element 26b of the energy storage unit 18b, the seat mounting device 10b has a release unit 44b. The trip unit 44b triggers the movement of the support arm 16b in the unlocked position 22b. To release the locking of the actuating element 26b and thus to release the locking of the support arm 16b in the stowage position 20b, the trip unit 44b has a rod 108b. The rod 108b is located at one end on the locking element 30b. Another end of the rod 108b abuts on a trigger button 106b of the trip unit 44b. In order for the rod 108b to rest securely on the release button 106b, the release unit 44b has a spring element 116b. The spring element 116b is formed as a spiral spring. The spring element 116b is disposed between a protrusion of the rod 108b and a support member 118b fixedly connected to the hinge of the main hinge unit 58b. The spring element 116b moves the rod 108b into an initial position, in which the rod 108b bears against the release button 106b and exerts no force on the latching element 30b.

The trigger button 106b is disposed in a recess in the support arm piece 70b. The trigger button 106b is rotatably disposed in the recess with respect to a housing of the Tragarmstücks 70b. The trigger button 106b has an axis of rotation. The axis of rotation is arranged parallel to the main joint axis. In order to move the release button 106b into an initial position after being actuated, the release unit 44b has a further spring element 120b. The spring element 120b is designed as a spiral spring. By pressing the release button 106b, the rod 108b presses on the latching element 30b, whereby the latching element 30b is rotated and the positive connection with the actuating element 26b is released.

The fixing unit 24b, the energy storage unit 18b, the trip unit 44b, and the power conversion unit 40b are integrated in the main joint housing 60b and thus in the housing 28b. Except for the trigger button 106b, the elements of the fixing unit 24b, the energy storage unit 18b, the trip unit 44b and the power conversion unit 40b not visible.

In an operation of the seat mounting apparatus 10b in which the user wants to set the use position 52b based on the stowage position 20b, the user operates the release button 106b of the release unit 44b. By actuating the release button 106b, the release unit 44b triggers the latching of the actuation element 26b and, at the same time, the latching of the support arm 16b via the force conversion unit 40b. By held until then in the tensioned state energy storage unit 18b is released after releasing the locking of the actuating element 26b stored in the energy storage unit 18b translational force, whereby a linear movement of the actuating element 26b results. The force conversion unit 40b converts the translatory force or the linear movement of the actuating element 26b of the energy storage unit 18b into a torque or into a rotational movement of the support arm 16b. Due to the positive connection of the actuating element 26b with the pivot joint of the main hinge unit 58b due to the deflection gear 42b of the power conversion unit 40b, the actuating element 26b moves the support arm 16b in the direction of movement 66b along the substantially frictionless pivot portion 78b in the unlocked position 22b. The energy storage unit 18b or the spring element 38b of the energy storage unit 18b is now in a relaxed or in a powerless state. In the absence of external force by the user, the energy storage unit 18b holds the support arm 16b in the unlocked position 22b. The force stored in the energy storage unit 18b thus acts on the support arm 16b only after release of the latching of the actuation element 26b. Starting from the unlocked position 22b, the user sets the desired use position 52b by moving the support arm 16b in the direction of movement 66b along the frictional part pivoting region 76b. The toothing of Tragarmbetätigungselements 92b no longer engages in the toothing of the actuating element 26b. The friction unit holds the desired use position 52b by a frictional force. Through the joints, the user adjusts the use position 52b of the object designed as a monitor.

In an operating sequence of the seat mounting device 10b, in which the user, starting from the use position 52b, wants to set the stowage position 20b, the user moves the support arm 16b in the direction of movement 68b along the frictional part pivoting area 76b in the unlocked position 22b. The energy storage unit 18b holds in the absence of external force by the user, the support arm 16b in the unlocked position 22b firmly. In the unlocked position 22b, the toothing of the Tragarmbetätigungselements 92b again partially engages in the toothing of the actuating element 26b of the energy storage unit 18b. Until then, the energy storage unit 18b is in the relaxed state or in the powerless state. Starting from the unlocked position 22b, the user moves the support arm 16b in the direction of movement 68b along the substantially frictionless part pivoting region 78b into the stowage position 20b. When moving the support arm 16b in the direction of movement 68b along the substantially frictionless Teilschwenkbereich 78b the user only overcomes the force of the spring element 38b and spans the hitherto relaxed energy storage unit 18b and the hitherto relaxed spring element 38b of the energy storage unit 18b. By moving the support arm 16b in the direction of movement 68b along the substantially frictionless part pivotal region 78b, the force conversion unit 40b converts the torque applied by the user into a translational force. This translational force stores the spring element 38b. This translational force is the force that moves the support arm 16b upon actuation of the release button 106b in the unlocked position 22b. The stowage position 20b is set when the latching element 30b engages. When the latching element 30b engages, the latching element 30b decouples the translational force of the energy storage unit 18b from the support arm 16b. The latching element 30b transmits the force of the tensioned energy storage unit 18b to the stationarily arranged main joint housing 60b or to the housing 28b of the fixing unit 24b. The fixing unit 24b directly holds the tensioned state of the energy storage unit 18b and indirectly via the deflection gear 42b of the power conversion unit 40b simultaneously the support arm 16b in the stowage position 20b. The resulting from the tensioned state translational force of the energy storage unit 18b is decoupled from the support arm 16b and separated. The support arm 16b is powerless in a latched state with respect to the power of the energy storage unit 18b. reference numeral 10 Seat hitch 62 mounting surface 12 object 64 swivel range 14 Seat 66 movement direction 16 Beam 68 movement direction 18 Energy storage unit 70 Tragarmstück 20 stowed 72 connecting piece 22 unlocking 74 Devices receiving piece 24 fuser 76 frictional partial pivoting range 26 actuator 28 casing 78 frictionless part swivel range 30 locking element 80 mounting module 32 locking element 82 guide element 34 Rest trip unit 84 screw 36 coupling element 86 guide rail 38 spring element 88 recess 40 Power conversion unit 90 recess 42 deflecting 92 Tragarmbetätigungselement 44 trip unit 94 locking element 46 armrest 96 locking element 48 seat foot 98 spring element 50 ground 100 spring element 52 use position 102 easy ending 54 screen plane 104 double end 56 backrest 106 release button 58 Main joint unit 108 Rod 60 Main joint housing 110 screw 112 screw 114 spring element 116 spring element 118 supporting 120 spring element

Claims (9)

1. Seat add-on device, in particular air passenger seat add-on device, for movably fixating an object (12a) to a seat (14a; 14b), with a support arm (16a; 16b) and with at least one mechanical energy storage unit (18a; 18b), which is configured to store, in a tensioned state, a force provided for moving the support arm (16a; 16b) from a stowage position (20a; 20b) into an unlocked position (22a; 22b), and with at least one fixation unit (24a; 24b). which is provided to hold the energy storage unit (18a; 18b) in the tensioned state, independently from the support arm (16a; 16b), wherein the energy storage unit (18a; 18b) comprises at least one actuation element (26a; 26b) and the fixation unit (24a; 24b) comprises a stationarily arranged housing (28a; 28b) and is provided to directly connect the actuation element (26a; 26b) to the housing (28a; 28b), wherein the fixation unit (24a; 24b) comprises at least one latching element (30a; 30b), which is configured to directly latch at least the actuation element (26a; 26b) of the energy storage unit (18a; 18b), and wherein the fixation unit (24a) comprises at least one further latching element (32a), which is configured to directly latch the support arm (16a) and comprises a latch-release unit (34a), which is configured to release the latching elements (30a, 32a) temporally one after the other one, characterised in that the latch-release unit (34a) comprises at least one coupling element (36a), which is provided to couple the at least two latching elements (30a, 32a) to each other movement-technically.
2. Seat add-on device according to claim 1, characterised in that the fixation unit (24a; 24b) is provided to fixate the support arm (16a; 16b) in the stowage position (20a; 20b).
3. Seat add-on device according to one of the preceding claims, characterised in that the support arm (16a; 16b) is in the stowage position (20a; 20b) powerless as regards the force stored in the energy storage unit (18a; 18b).
4. Seat add-on device according to one of the preceding claims, characterised in that the energy storage unit (18a; 18b) comprises at least one linear spring element (38a; 38b) which is provided to store a translational force.
5. Seat add-on device at least according to claim 1, characterised by at least one force-conversion unit (40a; 40b) which is configured to couple at least the actuation element (26a; 26b) of the energy storage unit (18a; 18b) with at least a portion of the support arm (16a; 16b) movement-technically.
6. Seat add-on device according to claim 5, characterised in that the energy conversion unit (40a; 40b) is configured to convert the force stored in the energy storage unit (18a; 18b) into a torque for actuating the support arm (16a; 16b).
7. Seat add-on device at least according to claims 1 and 5, characterised in that the energy conversion unit (40b) features at least one deflection gear (42b), which is in at least one operating state provided to connect the support arm (16b) to the latch element (30b) in a form-fit fashion.
8. Seat add-on device at least according to claim 5, characterised in that the energy conversion unit (40b) is embodied as a rack-and-pinion gear.
9. Seat add-on device according to one of the preceding claims, characterised by a release unit (44a; 44b), which is provided to actuate the fixation unit (24a; 24b) for together releasing the fixation of the support arm (16a; 16b) and the fixation of the energy storage unit (18a; 18b).

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